{"product_id":"ollo-audio-s4x-reference-open-back-studio-headphones","title":"OLLO Audio S4X Reference Open-Back Studio Headphones","description":"\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003eOLLO Audio S4X\u003c\/strong\u003e\u003cspan\u003e are professional open-back reference headphones developed specifically for mixing, mastering and critical studio monitoring. Their acoustic design focuses on a neutral, controlled presentation intended to help engineers make reliable production decisions without excessive tonal coloration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe S4X use large \u003c\/span\u003e\u003cstrong\u003e50 mm dynamic drivers\u003c\/strong\u003e\u003cspan\u003e that are individually measured and selected in matched pairs. OLLO evaluates drivers in laboratory batches and analyzes their frequency-domain performance before pairing them, helping maintain consistent left-to-right response and accurate stereo imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eVersion 1.3 incorporates OLLO’s \u003c\/span\u003e\u003cstrong\u003eUSC calibration\u003c\/strong\u003e\u003cspan\u003e, developed to further refine the frequency response for professional mixing and mastering. The objective is a balanced monitoring reference that allows engineers to assess tonal relationships, dynamics and spatial information with greater consistency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe acoustic architecture separates the front and rear sections of the driver through a carefully controlled chamber design. This approach helps achieve a smoother frequency response while improving definition between low and mid frequencies — an important factor when balancing bass instruments, vocals and other central elements of a mix.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith a frequency response of \u003c\/span\u003e\u003cstrong\u003e20 Hz to 20 kHz\u003c\/strong\u003e\u003cspan\u003e, the S4X concentrate on controlled reproduction throughout the conventional audible spectrum. Their open-back construction minimizes internal acoustic reflections and contributes to a spacious presentation with natural stereo separation and depth.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe headphones have an impedance of \u003c\/span\u003e\u003cstrong\u003e32 ohms\u003c\/strong\u003e\u003cspan\u003e and a characteristic sound-pressure level of 108 dB. This relatively low impedance provides broad compatibility with professional audio interfaces, headphone amplifiers and suitably capable portable sources, making the S4X practical across different production environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSignal transmission is handled by a\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003edetachable dual-entry cable\u003c\/strong\u003e\u003cspan\u003e with an OFC conductor. Its silicone outer layer is designed to reduce mechanical cable noise and microphonics, while the replaceable architecture simplifies maintenance and long-term use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eComfort and acoustic behaviour are supported by \u003c\/span\u003e\u003cspan\u003eh\u003cstrong\u003eybrid velour and synthetic-leather ear pads\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e. The combination of materials helps control airflow around the driver while providing a soft contact surface for extended mixing and mastering sessions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA self-adjusting \u003c\/span\u003e\u003cstrong\u003estainless-steel headband\u003c\/strong\u003e\u003cspan\u003e provides structural durability, while components are designed with serviceability in mind. Parts can be replaced using conventional tools, extending the practical working life of the headphones.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe construction combines \u003c\/span\u003e\u003cstrong\u003estainless steel, aluminium and CNC-machined American walnut\u003c\/strong\u003e\u003cspan\u003e, avoiding an extensively plastic chassis. The wooden earcups are precision-machined to provide structural consistency while giving the S4X their distinctive professional appearance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCombining matched 50 mm drivers, USC calibration, open-back acoustics and a serviceable construction, the \u003c\/span\u003e\u003cstrong\u003eOLLO Audio S4X\u003c\/strong\u003e\u003cspan\u003e are designed as a dedicated reference monitoring tool for engineers and producers working with mixing, mastering and detailed audio evaluation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eBrand: OLLO Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eModel: S4X\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eType: professional reference studio headphones\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eAcoustic design: open-back\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eForm factor: over-ear\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eDriver type: dynamic\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eDriver diameter: 50 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eDriver matching: laboratory-selected matched pairs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eCalibration: USC, version 1.3\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eFrequency response: 20 Hz – 20 kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eImpedance: 32 Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eCharacteristic sound pressure level: 108 dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eCable system: detachable, dual-entry\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eCable conductor: OFC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eConnection: 3.5 mm stereo mini-jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eEar pads: hybrid velour and synthetic leather\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eHeadband: self-adjusting stainless steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eMain materials: American walnut, stainless steel and aluminium\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eWooden components: CNC-machined\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003eServiceable construction: yes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"docx-num-1-0\"\u003e\u003cspan\u003ePrimary applications: mixing, mastering and critical monitoring\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":52634463142104,"sku":null,"price":10750.0,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/3045\/5000\/files\/20240125151433-920x919.jpg?v=1791227524","url":"https:\/\/zvukovagalerie.com\/en\/products\/ollo-audio-s4x-reference-open-back-studio-headphones","provider":"Zvuková Galerie","version":"1.0","type":"link"}